CN219971544U - High strength elevator sedan-chair frame - Google Patents

Abstract

The utility model provides a high-strength elevator car frame, belongs to the technical field of elevators, and is used for solving the technical problem of the structural strength intersection of the existing elevator car frame. The car frame comprises a stand column, a lower beam assembly and an upper beam assembly, wherein the lower beam assembly and the upper beam assembly are connected with the stand column, a lower reinforcing beam is arranged below the lower beam assembly, a reinforcing piece is arranged at the joint of the end part of the lower reinforcing beam and the stand column and the lower beam assembly, an upper reinforcing beam is arranged above the upper beam assembly, a reinforcing piece is arranged at the joint of the upper reinforcing beam and the stand column and the upper beam assembly, and a plurality of pull rod assemblies are arranged at the middle parts of the lower beam assembly and the upper beam assembly and are connected with the stand column; the reinforcing piece can increase the structural strength of junction, and lower reinforcing beam can increase the supporting strength to lower beam assembly, can improve the bearing capacity of sedan-chair frame, goes up reinforcing beam and can improve the tensile strength of sedan-chair frame, and this structure can promote holistic structural strength and the stability of sedan-chair frame, increases the bearing capacity of elevator.

Description

High strength elevator sedan-chair frame

Technical Field

The utility model belongs to the technical field of elevators, and relates to a high-strength elevator car frame.

Background

The load capacity of the elevator is an important factor of the structural design of the elevator, and particularly for a freight elevator with large load capacity, the load capacity requirement of the elevator is high. The elevator car is installed on the car frame, and the car frame is the main part of elevator bearing, and the car frame is the composite frame that is used for installing the metallic structure of car, comprises parts such as stand, underbeam, upper beam and pull rod, and the structural strength of car frame directly influences the bearing capacity of elevator.

When the large-load elevator is used, the requirements on the elevator car frame are high, the upright post, the lower beam, the upper beam and other parts of the existing elevator car frame are usually made of steel plate folded edges or sectional materials, and are spliced through bolts or welding, the strength of the elevator car frame structure is relatively low, so that the bearing capacity of the elevator is reduced, and the elevator car frame is easy to deform in the process of carrying goods.

Therefore, the high-strength elevator car frame with high bearing capacity is designed, and the structural strength and stability of the car frame are improved, so that the bearing capacity of an elevator is improved.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a high-strength elevator car frame, which aims to solve the technical problems that: how to improve the strength of the elevator car frame.

The aim of the utility model can be achieved by the following technical scheme:

the high-strength elevator car frame comprises a stand column, a lower beam assembly and an upper beam assembly, wherein the lower beam assembly and the upper beam assembly are connected with the stand column, the upper beam assembly is positioned above the lower beam assembly, a lower reinforcing beam is arranged below the lower beam assembly, the end part of the lower reinforcing beam is detachably connected with the stand column and the lower beam assembly, a reinforcing piece is arranged at the joint of the end part of the lower reinforcing beam and the lower beam assembly, an upper reinforcing beam is arranged above the upper beam assembly, the end part of the upper reinforcing beam is detachably connected with the stand column and the upper beam assembly, a reinforcing piece is arranged at the joint of the end part of the upper reinforcing beam and the upper beam assembly, and a plurality of pull rod assemblies are arranged at the middle parts of the lower beam assembly and the upper beam assembly and are connected with the middle part of the stand column; through set up the structural strength that the reinforcement increased junction at stand, underbeam subassembly and upper beam subassembly, the below of underbeam subassembly sets up down the reinforcing beam simultaneously, can increase the supporting strength to underbeam subassembly, can improve the bearing capacity of sedan-chair frame, sets up the reinforcing beam in the top of upper beam subassembly, can improve the tensile strength of sedan-chair frame, and this structure can promote holistic structural strength and the stability of sedan-chair frame to increase the bearing capacity of elevator.

The upright post, the lower beam assembly and the upper beam assembly are all made of profile steel.

The lower beam assembly is of a frame structure, the lower beam assembly comprises a lower side beam, a lower longitudinal beam, a lower cross beam, a first lower connecting beam and a second lower connecting beam, the end parts of the lower side beam are connected with the stand columns through bolts, the lower longitudinal beam is perpendicular to the lower cross beam, the two ends of the lower longitudinal beam are connected with the stand columns on the two sides through bolts, the lower side beam is connected with the lower cross beam through a plurality of first lower connecting beams, the lower longitudinal beam is connected with the first lower connecting beam through the second lower connecting beam, the connecting mode is welding or bolting, the upper end surfaces of the first lower longitudinal beam, the lower cross beam, the first lower connecting beam and the second lower connecting beam are located on the same horizontal plane, the lower reinforcing beam is located below the lower side beam and the upper end surfaces of the lower reinforcing beam are tightly attached to the lower cross beam and the lower end surfaces of the lower side beam, the lower reinforcing beam provides support for the lower side beam and the lower cross beam, and the support strength and deformation resistance of the lower beam assembly are improved.

By adopting the structure, through the frame supporting structure formed by the lower side beam, the lower longitudinal beam, the lower cross beam, the lower connecting beam I and the lower connecting beam II, on one hand, the structural strength of the lower beam assembly can be improved, on the other hand, the supporting area of the lower beam assembly and the bottom of the car can be increased, the load distribution born by the car frame is more uniform, and the bearing capacity of the car frame is improved.

The upper beam assembly is of a frame structure, the upper beam assembly comprises an upper side beam, an upper longitudinal beam, an upper cross beam and an upper connecting beam, the end part of the upper side beam is connected with the upright posts through bolts, the upper longitudinal beam is perpendicular to the upper cross beam, the two ends of the upper longitudinal beam are connected with the upright posts on the two sides through bolts, the upper side beam is connected with the upper cross beam through a plurality of upper connecting beams, the connecting mode is welding or bolting, the upper reinforcing beam is located above the upper side beam and the upper cross beam, and the lower end face of the upper reinforcing beam is tightly attached to the upper end faces of the upper side beam and the upper cross beam.

By adopting the structure, the upper reinforcing beam provides support for the upper side beam and the upper cross beam, and the tensile strength and the deformation resistance of the upper beam assembly are improved, so that the overall structural strength and the bearing capacity of the car frame are improved.

The reinforcement piece includes first connecting plate, second connecting plate and riser, and first connecting plate and second connecting plate set up perpendicularly and both welded fastening, riser and both sides limit respectively with first connecting plate and second connecting plate welded fastening, all offered a plurality of screw holes on first connecting plate and the second connecting plate, the screw hole of offering on the first connecting plate is used for first connecting plate and stand, roof side rail and roof side rail are connected down, and the screw hole of opening on the second connecting plate is used for the second connecting plate to be connected with roof side rail and roof side rail down.

By adopting the structure, the reinforcing piece is arranged at the joints of the lower boundary beam, the upper boundary beam, the lower reinforcing beam and the upper reinforcing beam, so that the structural strength of the joints can be improved, the joints are more stable, and the joints are connected through bolts, so that the installation and the disassembly are convenient.

The lower side beam, the lower longitudinal beam, the lower cross beam, the upper side beam, the upper longitudinal beam, the upper cross beam, the lower reinforcing beam and the upper reinforcing beam are all made of channel steel, and reinforcing ribs are welded in the notches of the channel steel.

By adopting the structure, the reinforcing ribs can increase the structural strength of each supporting beam, and further increase the structural strength of the car frame.

The pull rod assembly comprises a first connecting block, a pull rod connecting plate, a pull rod, a second connecting block and a hinging block, one end of the pull rod is welded and fixed with the pull rod connecting plate, the pull rod connecting plate is connected with the first connecting block through a bolt, the other end of the pull rod is provided with external threads, the end part penetrates through the hinging block to be connected with a nut, a screw rod is arranged on one side of the hinging block, and a through hole for the screw rod to penetrate is formed in the second connecting block.

By adopting the structure, the pull rod assembly is used for the underbeam assembly, the upper beam assembly and the stand are connected, provide auxiliary support, with reinforcing sedan-chair frame structural strength, when the installation, first linkage block welds on the stand, the second connecting block welds on roof side rail or underbeam, offer on roof side rail or the underbeam with screw rod matched with through-hole, the screw rod of articulated piece rear side passes from the through-hole and through nut fixed connection, first linkage block passes through the bolt and is connected with the pull rod connecting plate, pass in the articulated piece and the tip is connected through the double nut from the tip of pull rod, this pull rod structure can improve the structural strength of sedan-chair frame, and have certain adjustability, simple to operate.

Compared with the prior art, the high-strength elevator car frame has the following advantages:

1. this elevator sedan-chair frame comprises stand, underbeam subassembly, lower reinforcing beam, upper beam subassembly and the concatenation of last reinforcing beam, and the car is installed on the underbeam subassembly, and the lower reinforcing beam setting can increase the supporting strength to the underbeam subassembly in the below of underbeam subassembly, can improve the bearing capacity of sedan-chair frame, and the upper beam subassembly mainly bears the pulling force, sets up the reinforcing beam in the top of upper beam subassembly, can improve the tensile strength of sedan-chair frame, and this structure can promote holistic structural strength and the stability of sedan-chair frame.

2. The reinforcing piece is arranged at the joint of the lower side beam, the upper side beam, the lower reinforcing beam and the upper reinforcing beam, so that the structural strength of the joint can be improved, the joint is more stable, and the joint is connected through bolts, so that the installation and the disassembly are convenient; the inside of supporting beams such as roof beam, upper beam, lower reinforcing beam and upper reinforcing beam all is provided with the strengthening rib down, and the strengthening rib can increase the structural strength of each supporting beam.

3. Be provided with the pull rod subassembly on underbeam subassembly, upper beam subassembly and the stand and connect, the structural strength and the stability of sedan-chair frame can further be improved to the pull rod structure, and has certain adjustability, simple to operate.

4. The elevator car frame has high structural strength, is not easy to deform in the cargo carrying process, has good stability and can effectively increase the bearing capacity of an elevator.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic side elevational view of the present utility model;

FIG. 3 is a schematic top view of the upper beam assembly of the present utility model;

FIG. 4 is a schematic top view of a lower beam assembly of the present utility model;

FIG. 5 is a schematic side view of the reinforcement of the present utility model;

FIG. 6 is a schematic diagram of the front view of the reinforcement member of the present utility model;

FIG. 7 is a schematic view of the construction of the tie rod assembly of the present utility model;

FIG. 8 is a schematic top view of a hinge block of the present utility model;

FIG. 9 is an enlarged schematic view of the structure of FIG. 1 at A;

in the figure: 1. a column; 2. a lower beam assembly; 21. a lower edge beam; 22. a side sill; 23. a lower cross beam; 24. a lower connecting beam I; 25. a second lower connecting beam; 3. a lower reinforcing beam; 4. an upper beam assembly; 41. a roof side rail; 42. an upper longitudinal beam; 43. an upper cross beam; 44. an upper connecting beam; 5. a reinforcing beam is arranged on the upper reinforcing beam; 6. a reinforcing member; 61. a first connection plate; 62. a second connecting plate; 63. a vertical plate; 7. a pull rod assembly; 71. a first connection block; 72. a pull rod connecting plate; 73. a pull rod; 74. a second connection block; 75. a hinge block; 76. a screw; 8. reinforcing ribs.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1-9, the present embodiment provides a high-strength elevator car frame, which comprises a vertical column 1, a lower beam assembly 2 and an upper beam assembly 4, wherein the lower beam assembly 2 and the upper beam assembly 4 are connected with the vertical column 1, the upper beam assembly 4 is positioned above the lower beam assembly 2, a lower reinforcing beam 3 is arranged below the lower beam assembly 2, a reinforcing member 6 is arranged at the joint of the end part of the lower reinforcing beam 3 and the vertical column 1 and the lower beam assembly 2, an upper reinforcing beam 5 is arranged above the upper beam assembly 4, a reinforcing member 6 is arranged at the joint of the end part of the upper reinforcing beam 5 and the vertical column 1 and the upper beam assembly 4, and a plurality of pull rod assemblies 7 are arranged at the middle parts of the lower beam assembly 2 and the upper beam assembly 4 and are connected with the middle part of the vertical column 1; through set up the structural strength that reinforcement 6 increased junction in stand 1, underbeam subassembly 2 and upper beam subassembly 4, the below of underbeam subassembly 2 sets up down the stiffening beam 3 simultaneously, can increase the supporting strength to underbeam subassembly 2, can improve the bearing capacity of sedan-chair frame, sets up the stiffening beam 5 in the top of upper beam subassembly 4, can improve the tensile strength of sedan-chair frame, and this structure can promote holistic structural strength and the stability of sedan-chair frame to increase the bearing capacity of elevator.

The upright post 1, the lower beam assembly 2 and the upper beam assembly 4 are all made of steel sections, and preferably, in this embodiment, the upright post 1, the lower beam assembly 2 and the upper beam assembly 4 are all made of channel steel.

The lower beam assembly 2 is of a frame structure, the lower beam assembly 2 comprises a lower side beam 21, a lower longitudinal beam 22, a lower cross beam 23, a first lower connecting beam 24 and a second lower connecting beam 25, the end part of the lower side beam 21 is connected with the upright 1 through bolts, the lower longitudinal beam 22 is vertically arranged with the lower cross beam 23, the two ends of the lower longitudinal beam 22 are connected with the upright 1 on two sides through bolts, the lower side beam 21 is connected with the lower cross beam 23 through a plurality of first lower connecting beams 24, the lower longitudinal beam 22 is connected with the first lower connecting beam 24 through the second lower connecting beam 25 through welding or bolts, the upper end surfaces of the lower longitudinal beam 22, the lower cross beam 23, the first lower connecting beam 24 and the second lower connecting beam 25 are positioned on the same horizontal plane, the lower reinforcing beam 3 is positioned below the lower side beam 21 and the lower cross beam 23, the upper end surfaces of the lower reinforcing beam 3 are tightly attached to the lower cross beam 23 and the lower end surfaces of the lower side beam 21, the lower reinforcing beam 3 provides support for the lower side beam 21 and the lower cross beam 23, and the support strength and deformation resistance of the lower beam assembly 2 are improved; through the frame support structure that roof side rail 21, side sill 22, bottom end rail 23, first 24 of lower tie beam and second 25 of lower tie beam are constituteed, on the one hand can improve the structural strength of roof side rail subassembly 2, on the other hand can increase the bearing area of roof side rail subassembly 2 and car bottom, make the load distribution that the sedan-chair frame bore more even, improve the bearing capacity of sedan-chair frame.

The upper beam assembly 4 is of a frame structure, the upper beam assembly 4 comprises an upper side beam 41, an upper longitudinal beam 42, an upper cross beam 43 and an upper connecting beam 44, the end part of the upper side beam 41 is connected with the upright posts 1 through bolts, the upper longitudinal beam 42 is perpendicular to the upper cross beam 43, the two ends of the upper longitudinal beam 42 are connected with the upright posts 1 on two sides through bolts, the upper side beam 41 is connected with the upper cross beam 43 through a plurality of upper connecting beams 44 in a welding or bolting mode, the upper reinforcing beam 5 is located above the upper side beam 21 and the upper cross beam 43, the lower end face of the upper reinforcing beam 5 is tightly attached to the upper end faces of the upper side beam 41 and the upper cross beam 43, the upper reinforcing beam 5 supports the upper side beam 41 and the upper cross beam 43, and the tensile strength and the deformation resistance of the upper beam assembly 4 are improved, and the overall structural strength and the bearing capacity of the car frame are improved.

The reinforcement member 6 comprises a first connecting plate 61, a second connecting plate 62 and a vertical plate 63, wherein the first connecting plate 61 and the second connecting plate 62 are vertically arranged and are welded and fixed, the vertical plate 63 and two side edges are respectively welded and fixed with the first connecting plate 61 and the second connecting plate 62, a plurality of threaded holes are formed in the first connecting plate 61 and the second connecting plate 62, the threaded holes formed in the first connecting plate 61 are used for connecting the first connecting plate 61 with the upright column 1, the lower side beam 21, the upper side beam 41, the lower reinforcing beam 3 and the upper reinforcing beam 5, and the threaded holes formed in the second connecting plate 62 are used for connecting the second connecting plate 62 with the lower side beam 21 and the upper side beam 41; the reinforcing piece 6 is arranged at the joint of the lower boundary beam 21, the upper boundary beam 41, the lower reinforcing beam 3 and the upper reinforcing beam 5, so that the structural strength of the joint can be improved, the joint is more stable, and the joint is connected through bolts, so that the installation and the disassembly are convenient.

Preferably, in this embodiment, the lower side sill 21, the lower side sill 22, the lower cross member 23, the upper side sill 41, the upper side sill 42, the upper cross member 43, the lower reinforcing beam 3 and the upper reinforcing beam 5 are all made of channel steel, and the reinforcing ribs 8 are welded in the notches of the channel steel, so that the structural strength of each supporting beam can be increased by the reinforcing ribs 8, and the structural strength of the car frame is further increased.

The pull rod assembly 7 comprises a first connecting block 71, a pull rod connecting plate 72, a pull rod 73, a second connecting block 74 and a hinging block 75, one end of the pull rod 73 is welded and fixed with the pull rod connecting plate 72, the pull rod connecting plate 72 is connected with the first connecting block 71 through a bolt, the other end of the pull rod 73 is provided with external threads, the end part penetrates through the hinging block 75 to be connected with a nut, one side of the hinging block 75 is provided with a screw 76, and the second connecting block 74 is provided with a through hole for the screw 76 to penetrate through; the pull rod assembly 7 is used for connecting the lower beam assembly 2, the upper beam assembly 4 and the upright 1, auxiliary support is provided, so that the structural strength of the car frame is enhanced, when the elevator is installed, the first connecting block 71 is welded on the upright 1, the second connecting block 74 is welded on the upper side beam 41 or the lower side beam 21, a through hole matched with the screw 76 is formed in the upper side beam 41 or the lower side beam 21, the screw 76 at the rear side of the hinge block 75 penetrates through the through hole and is fixedly connected through a nut, the first connecting block 71 is connected with the pull rod connecting plate 72 through a bolt, the end part of the pull rod 73 penetrates through the hinge block 75 and is connected through a double nut, the structural strength of the car frame can be improved through the pull rod structure, the elevator is adjustable, and the elevator is convenient to install.

The working principle of the utility model is as follows:

the high-strength elevator car frame provided by the utility model is formed by splicing an upright column 1, a lower beam assembly 2, a lower reinforcing beam, an upper beam assembly 4 and an upper reinforcing beam 5, wherein the lower side beam 21, the lower longitudinal beam 22, the lower cross beam 23, the upper side beam 41, the upper longitudinal beam 42, the upper cross beam 43, the lower reinforcing beam 3 and the upper reinforcing beam 5 are all made of channel steel, reinforcing ribs 8 are welded in the elevator car frame, and the reinforcing ribs 8 can increase the structural strength of each supporting beam; the car is arranged on the lower beam assembly 2, the lower reinforcing beam 3 is arranged below the lower beam assembly 2, so that the supporting strength of the lower beam assembly 2 can be increased, the bearing capacity of the car frame can be improved, the upper beam assembly 4 mainly bears the tensile force, and the upper reinforcing beam 5 is arranged above the upper beam assembly 4, so that the tensile strength of the car frame can be improved; meanwhile, the reinforcing piece 6 is arranged at the joint of the lower side beam 21, the upper side beam 41, the lower reinforcing beam 3 and the upper reinforcing beam 5, so that the structural strength of the joint can be improved, the joint is more stable, and the joint is connected through bolts, so that the installation and the disassembly are convenient; when the pull rod assembly 7 is installed, the first connecting block 71 is welded on the upright column 1, the second connecting block 74 is welded on the upper side beam 41 or the lower side beam 21, through holes matched with the screw rods 76 are formed in the upper side beam 41 or the lower side beam 21, the screw rods 76 at the rear side of the hinge blocks 75 penetrate through the through holes and are fixedly connected through nuts, the first connecting block 71 is connected with the pull rod connecting plate 72 through bolts, the end part of the pull rod 73 penetrates through the hinge blocks 75 and is connected through double nuts, and the structure of the pull rod can further improve the structural strength and stability of the car frame and has certain adjustability and is convenient to install.

While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (6)

1. The utility model provides a high strength elevator sedan-chair frame, includes stand (1), underbeam subassembly (2) and upper beam subassembly (4) all are connected with stand (1), and upper beam subassembly (4) are located the top of underbeam subassembly (2), a serial communication port, the below of underbeam subassembly (2) is provided with down the reinforcing beam (3), and the tip and stand (1) of reinforcing beam (3) and underbeam subassembly (2) detachable connection and junction are provided with reinforcement (6), and the top of upper beam subassembly (4) is provided with reinforcing beam (5), and the tip and stand (1) and upper beam subassembly (4) detachable connection and junction are provided with reinforcement (6), and the middle part of underbeam subassembly (2) and upper beam subassembly (4) all is provided with the middle part of a plurality of pull rod assemblies (7) and stand (1) to be connected.

2. The high-strength elevator car frame according to claim 1, wherein the lower beam assembly (2) comprises a lower side beam (21), a lower longitudinal beam (22), a lower cross beam (23), a first lower connecting beam (24) and a second lower connecting beam (25), the end parts of the lower side beam (21) are connected with the upright posts (1) through bolts, the lower longitudinal beam (22) is vertically arranged with the lower cross beam (23), the two ends of the lower longitudinal beam (22) are connected with the upright posts (1) on two sides through bolts, the lower side beam (21) is connected with the lower cross beam (23) through a plurality of first lower connecting beams (24), the lower longitudinal beam (22) is connected with the first lower connecting beam (24) through a second lower connecting beam (25) through welding or bolts, the upper end surfaces of the lower longitudinal beam (22), the first lower cross beam (24) and the second lower connecting beam (25) are positioned on the same horizontal plane, and the lower reinforcing beam (3) is positioned below the lower side beam (21) and the upper end surfaces of the lower reinforcing beam (3) are tightly attached to the lower side beam (21).

3. The high-strength elevator car frame according to claim 2, wherein the upper beam assembly (4) comprises an upper side beam (41), an upper longitudinal beam (42), an upper cross beam (43) and an upper connecting beam (44), the end part of the upper side beam (41) is connected with the upright post (1) through bolts, the upper longitudinal beam (42) is vertically arranged with the upper cross beam (43), the two ends of the upper longitudinal beam (42) are connected with the upright posts (1) on two sides through bolts, the upper side beam (41) is connected with the upper cross beam (43) through a plurality of upper connecting beams (44), the upper reinforcing beam (5) is positioned above the upper side beam (41) and the upper cross beam (43), and the lower end face of the upper reinforcing beam (5) is tightly attached to the upper end faces of the upper side beam (41) and the upper cross beam (43).

4. A high-strength elevator car frame according to claim 1 or 3, characterized in that the reinforcement member (6) comprises a first connecting plate (61), a second connecting plate (62) and a vertical plate (63), wherein the first connecting plate (61) and the second connecting plate (62) are vertically arranged and are welded and fixed, the vertical plate (63) and two side edges are welded and fixed with the first connecting plate (61) and the second connecting plate (62) respectively, and a plurality of threaded holes are formed in the first connecting plate (61) and the second connecting plate (62).

5. A high-strength elevator car frame according to claim 3, characterized in that the lower side beams (21), the lower longitudinal beams (22), the lower cross beams (23), the upper side beams (41), the upper longitudinal beams (42), the upper cross beams (43), the lower reinforcing beams (3) and the upper reinforcing beams (5) are all made of channel steel, and reinforcing ribs (8) are welded in the notches of the channel steel.

6. A high strength elevator car frame according to claim 1 or 3, characterized in that the pull rod assembly (7) comprises a first connecting block (71), a pull rod connecting plate (72), a pull rod (73), a second connecting block (74) and a hinge block (75), one end of the pull rod (73) is welded and fixed with the pull rod connecting plate (72), the pull rod connecting plate (72) is connected with the first connecting block (71) through a bolt, the other end of the pull rod (73) is provided with an external thread, the end part passes through the hinge block (75) and is connected with a nut, a screw (76) is arranged on one side of the hinge block (75), and a through hole for the screw (76) to pass through is formed in the second connecting block (74).